1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
pogonyaev
2 years ago
6

What happens to the electropositive character of elements on moving from left to right along a period in a periodic table?​

Chemistry
2 answers:
Anettt [7]2 years ago
8 0

Answer:

On moving from left to right in a period the electropositive character decreases as the tendency to lose electrons decreases.

Explanation:

Aleks [24]2 years ago
7 0
On moving from left to right in a period, the electropositive character decreases as the tendency to lose electrons decreases.
You might be interested in
How many particles are in 6.02 moles of methane?
r-ruslan [8.4K]
One mole of methane has a mass of 16 g

5 0
3 years ago
Idenify each statement below as either oxidation or reduction.
Alenkasestr [34]

Answer:

1 = oxidation

2 = reduction

Explanation:

Oxidation:

Oxidation involve the removal of electrons and oxidation state of atom of an element is increased.

2I- ----> I₂+ 2e⁻

Reduction:

Reduction involve the gain of electron and oxidation number is decreased.

F + e⁻ ----> F⁻

Consider the following reactions.

4KI + 2CuCl₂  →   2CuI  + I₂  + 4KCl

the oxidation state of copper is changed from +2 to +1 so copper get reduced.

CO + H₂O   →  CO₂ + H₂

the oxidation state of carbon is +2 on reactant  side and on product side it becomes  +4 so carbon get oxidized.

Na₂CO₃ + H₃PO₄  →  Na₂HPO₄ + CO₂ + H₂O

The oxidation state of carbon on reactant side is +4. while on product side is  also +4 so it neither oxidized nor reduced.

H₂S + 2NaOH → Na₂S + 2H₂O

The oxidation sate of sulfur is -2 on reactant side and in product side it is also -2 so it neither oxidized nor reduced.

4 0
3 years ago
Write the balanced chemical equations for the following reactions .1)Barium Chloride + Potassium Sulphate -> Barium
Zigmanuir [339]

Answer:

1) BaCl2+K2So4 → BaSo4+ KCl

2) Zn+AgNO3 → Zn+NO3+Ag

6 0
3 years ago
Each element in the periodic table can be represented by a chemical symbol. Match each element to its chemical symbol.
Andrej [43]

\qquad\qquad\huge\underline{{\sf Answer}}

The Correct pair of Element and it's symbol ~

  • Mercury - Hg

  • Sodium - Na

  • Nitrogen - N

  • Chlorine - Cl

  • Hydrogen - H

5 0
2 years ago
A 62.6-gram piece of heated limestone is placed into 75.0 grams of water at 23.1°C. The limestone and the water come to a final
KATRIN_1 [288]

Answer : The initial temperature of the limestone is 1.05\times 10^{2}^oC.

Solution : Given,

Mass of limestone = 62.6 g

Mass of water = 75 g

Final temperature of limestone = 51.9^oC

Final temperature of water = 51.9^oC

Initial temperature of water = 23.1^oC

The specific heat capacity of limestone = 0.921J/g^oC

The specific heat capacity of water = 4.186J/g^oC

The formula used :

q = m × c × ΔT

where,

q = heat required

m = mass of an element

c = heat capacity

ΔT = change in temperature

According to this, the energy as heat lost by the system is equal to the gained by the surroundings.

Now the above formula converted and we get

q_{system}=-q_{surrounding}

m_{system}\times c_{system}\times (T_{final}-T_{initial})_{system}= -[m_{surrounding}\times c_{surrounding}\times (T_{final}-T_{initial})_{surrounding}]

m_{limestone}\times c_{limestone}\times (T_{final}-T_{initial})_{limestone}= -[m_{water}\times c_{water}\times (T_{final}-T_{initial})_{water}]

Now put all the given values in this formula, we get

62.6g\times 0.921J/g^{0}C \times (51.9^{0}C-T_{\text{ initial limestone}})= -[75g\times 4.186J/g^{0}C \times (51.9^{0}C-23.1^oC)]

By rearranging the terms, we get  the value of initial temperature of limestone.

T_{\text{ initial limestone}}=104.926^{0}C=1.05\times 10^{2}^oC

Therefore, the initial temperature of the limestone is 1.05\times 10^{2}^oC.




8 0
3 years ago
Read 2 more answers
Other questions:
  • Neopentyl alcohol, (ch3)3cch2oh, cannot be dehydrated to an alkene without rearrangement. what is the chief product of dehydrati
    9·1 answer
  • I need help with question 17 and 18 and it’s very hard and I’m struggling with it and if you need to see the picture big then cl
    6·1 answer
  • A substance placed in a container has a fixed volume and takes up the space of the container. In which state does this substance
    7·1 answer
  • What are the partial pressures of NH3 and H2S at equilibrium, that is, what are the values of PNH3 and PH2S, respectively?Enter
    9·1 answer
  • A solution contains 35 grams of KNO3 dissolved in 100 grams of water at 40°C. How much more KNO3 would have to be added to make
    14·2 answers
  • Which planet is the smallest and the closest to the Sun?
    12·2 answers
  • many cars have gas filled shock absorbers to give the car and it’s occupants a smooth ride. if a four passenger is loaded with f
    14·1 answer
  • Two different samples of solid iron are shiny, can be made into wire, and can rust when exposed to water. Why do the two samples
    14·2 answers
  • Which of the following is not a statement of Dalton's atomic theory of matter?a. Elements are made of atomsb. Atoms of a given e
    12·1 answer
  • What do we call the harmful substances that have a negative effect on the environment? *
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!